22202222022020 has 24 divisors (see below), whose sum is σ = 47389005039768. Its totient is φ = 8735300467200.

The previous prime is 22202222021953. The next prime is 22202222022047. The reversal of 22202222022020 is 2022022220222.

It can be written as a sum of positive squares in 4 ways, for example, as 1608995845444 + 20593226176576 = 1268462^2 + 4537976^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22202222021983 and 22202222022001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9099270101 + ... + 9099272540.

It is an arithmetic number, because the mean of its divisors is an integer number (1974541876657).

Almost surely, 2^{22202222022020} is an apocalyptic number.

22202222022020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22202222022020 is an abundant number, since it is smaller than the sum of its proper divisors (25186783017748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22202222022020 is a wasteful number, since it uses less digits than its factorization.

22202222022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18198542711 (or 18198542709 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 22202222022020 its reverse (2022022220222), we get a palindrome (24224244242242).

The spelling of 22202222022020 in words is "twenty-two trillion, two hundred two billion, two hundred twenty-two million, twenty-two thousand, twenty".